/// @dev Mints LP tokens - should be called via the router after transferring `bento` tokens.
/// The router must ensure that sufficient LP tokens are minted by using the return value.
function mint(bytes calldata data) public override lock returns (uint256 liquidity) {
    (address recipient, uint256 toMint) = abi.decode(data, (address, uint256));

    uint120 ratio = uint120(_div(toMint, totalSupply));

    for (uint256 i = 0; i < tokens.length; i++) {
        address tokenIn = tokens[i];
        uint120 reserve = records[tokenIn].reserve;
        // @dev If token balance is '0', initialize with `ratio`.
        uint120 amountIn = reserve != 0 ? uint120(_mul(ratio, reserve)) : ratio;
        require(amountIn >= MIN_BALANCE, "MIN_BALANCE");
        // @dev Check Trident router has sent `amountIn` for skim into pool.
        unchecked {
            // @dev This is safe from overflow - only logged amounts handled.
            require(_balance(tokenIn) >= amountIn + reserve, "NOT_RECEIVED");
            records[tokenIn].reserve += amountIn;
        }
        emit Mint(msg.sender, tokenIn, amountIn, recipient);
    }
    _mint(recipient, toMint);
    liquidity = toMint;
}
